Hot-air and steam heater



(No Model.) 2 Sheets-Sheet 1.

G. D. HOWARD.

EOT ATE AEE STEAM EEATEE.

2 Sheets-Sheet 2.

C. D. HOWARD.

EOT AIE AND STEAM EEATEE.

(No Model.)

Patented May 10, 1887.

n, D. C.

N. PETERS. mmlwmmogmp CHARLES HOWARD, OF SYRACUSE, NE\V YORK.

HOT-AIR AND STEAM HEATER.

SPECIFICATION forming part of Letters Patent No. 362,838, dated May l0,1887.

Application tiled June 3, 1886.

To @ZZ whom, it may concern:

- Be it known that 1, CHARLEs D. HOWARD, of Syracuse, in the county ofOnondaga, in the State ofNew York, have invented new and usefulImprovements in a Steam-Heater and Hot-Air Furnace Combined, of whichthe following, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention consists in an improved organization of an apparatusdesigned for heating buildings either by hot air or by steam, and whichis comparatively free from liability of having its rines and radiatorsclicked by dust and ashes, as hereinafter fully described, andspecifically set forth in the claims.

In the annexed drawings, Figure l is a side elevation of my inventionwith the inclosingease represent-ed by dotted lines and portions of theradiators broken away to illustrate other important features. Fig. 2 isa top plan View of the same. Fig. 3 is a vertical transverse section online .e Fig. 2. y Fig. 4 is a horizontal transverse section on line g/y, Fig. 3; and Fig. 5 is a sectional view of the connection of thesmoke-llue with the radiators, taken on line c Fig. 3.

Similar letters of referencel indieae correspending parts.

A represents the ash pit, B the fire -pot mounted on the ash pit, and Cthe combustionchambcr erected on thc fire-pot.

lt R R denote radiators of the form of annular pipes, arranged,successively, one below the other and extending completely around theexterior of the lire-pot and comlnistion-chai'nber. These radiatorscommunicate with each other and with the combustion-ehamber by thesmoke-line D D, which is extended `from the center to the top of thecombustionchamber C down at the exterior of the same, and is intersectedat different points of its length by the aforesaid radiators. Thedescribed smokeiiue terminates in the exit-flue E, which is eX- tendedfrom the lower radiator.

c a a are dampers pivoted across the centers of the intersections of theradiators R R R and tlue D D, and adapted to stand either vertically,and thus open the direct draft through the said iiue, or diagonally, soas to divert the current of the products of combus- Serial No. 204.0%.(No model.)

l tion from the smoke-flue successively through the radiators, asrepresented in Fig. 5 of the drawings, the products of combustion beingthereby compelled to circulate through the entire lengths of therespective radiators, and thus the escape of heat through the exit-tlueis to a great extent obviated, and the heat is absorbed by theradiators, which latter heat the air as it ascends from the bottom ofthe inelosingcase H and circulates around the radiators toward the usualhot-air pipes, P l?, by which said hot air is conducted to theapartments of the building to be heated.

Then first starting the rire in the {ire-pot, or at any time when astrong draft is required through the grate of the ire pot, the dampersa. a a are to be set perpendicular, as represented by dotted lines inFig. 5 of the drawbustion to pass fromthe upper smoke-liuc, I), downdirectly through the smoke-flue sections D D/ to the exit-flue E,nearthe base of the furnace. f After the fire is under way, one or moreof the aforesaid dainpers may be turned to compel the products ofcombustion to take the cireuitous passage through one or more radiatorsR, which conduct them in one direction completely around the exterior ofthe combustion-chamber and lire-pot, and thus greatly augment theheating-.surfaces ofthe furnace without materially impuiring theairdraft through the fire-pot.

The aforesaid radiators l provide with cleaning-llues b b b, extendingfrom the radiators through the side ofthe ease H, and provided withremovable covers. Dy removing the said covers and introducing along-handled brush or scraper into the radiators the soot can be sweptinto the smoke-'flue D', and allowed to drop into the exit-flue E, fromwhence it can be removed by disconnecting the latter, or the soot can bedrawn out through the aforesaid cleaning-lines.

From the asl1-pitA to the lower radiator R is extended a flue, c, inwhich is arranged a damper, d, provided with an adjusting rod or handle,which projects through the ease H, so as to be convenientformanipulation. By opening the said 'damper the air entering through theash-pit door is allowed to enter the aforesaid radiator direct, and thussaid radiator ings, thereby allowing the products of commay be cooledand the draft through the firepot checked when desired to cool down thefurnace. Said flue can also be used to allow the soot to drop into theash-pit during the operation of cleaning the radiator. However, in myimproved hot-air furnace the accumulalation of dust andl ashes in thetlues and radiators is effectually obviated by the downward direction ofthe products of combustion through the flue-sections which communicatewith the radiators, and by the arrangement of said due-sections directlyin line with each other, the dampers,'stauding vertically when the draftis strongest, allow the dust and ashes to fall by gravity through thesuccessive uesections down into the exit-tine at the base,from whencethey are readily removed by'disconmeeting said flue.

I I represent annular water and steam pipes arranged around the exteriorof the con1bnstion-chamber, and preferably above the saine, and betweenthe upper radiator and combustion chamber and adjacent portion of thesmoke-flue D. Said pipes are connected with each other by vertical tubesc e. Inside of the -Iirepot is arranged asteam generator consisting of acoiled pipe, L, the upper and lower ends of which are connected with thesaid annular pipes I I by pipesff.

In the operation ofthe aforesaid steam-generator and water and steampipes, the steam rises from the coil through the pipe fand cnters thepipe I, and the expansion of the water in the coil L drives the waterupward therefrom, and it is replaced by the water descend-Y ing from thelower annular pipe I through the pipef and into the bottom of the coilL,thus producing a circulation of water through the coil and obviating thedanger of burning the coil by the fire surrounding it.

In order to facilitate the aforesaid circulation, I form the coil Lofscctions of coilsjoined end to end, each of said sections being'formed of a pipe of a smaller diameter vthan the pipe of which theadjacent uppersection is formed.

h denotes the pipe which conducts the steam to the radiator located inthe apartment ofthe building to be heated.

z' i are pipes extended horizontally from the pipes I I and through theside of the casing Hand carrying on the extremities a watergage, asrepresented by dotted lines in Fig. 1 of the, drawings.

In order to augment the heating capacity of the described apparatus, Iprovide the exterior of the radiators R, and also the pipes I I, withspurs a n, which not only serve to break up and diffuse the current ofair circulating around said radiator and pipes, but also presentincreased' heating-surface.

Having described myinvention,whatIclaim as new, and desire to secure byLetters Patent, 1s

l. In combination with the repot and combustion -chamber, the flue D,extending from the top of the combustion-chamber down at the exterior ofthe same,n the Hue-sections D D', arranged-vertically inline with eachother and terminating in the exit-tlue E at the base, the annularradiators R It, arranged, successively,one below the other and extendingcompletely around the combustion-chamber and fire-pot, and connectedwith the intervening iiue-sections D', and the dampers a a a, pivotedacross the centers of the intersections of said radiators andflue-sections and adapted to stand either vertically for a direct draftor diagonally across the said intersections to direct the products ofcombustion through the radiators, substantially in the manner asspecified.

2. In combination with the fire pot and combustion chamber, annularwater and steam pipes arranged horizontally one above the other andconeentrically around the top ot' the combustion-chamber, vertical pipesconnecting said horizontal pipes, a coiled water-pipe inside of thetire-pot, and pipes connecting the upper and lower ends of the coiledpipe, respectively, with the aforesaid external horizontal pipes,substantially as described and shown.

In testimony whereof I have hereunto signed my name and afiixed my seal,in the presence of two attesting witnesses, at Syracuse, in the countyof Onondaga, in the State ofNew York, this 29th day of May, 1886.

CHARLES n. HOWARD. [n s] \Vitnesses:

C. BENDIXON, FREDERICK H. GIBBs.

